CN115246303A

CN115246303A - Glass component and window body assembly

Info

Publication number: CN115246303A
Application number: CN202111201850.4A
Authority: CN
Inventors: 于建凯; 马思腾
Original assignee: Saint Gobain Glass France SAS
Current assignee: Saint Gobain Glass France SAS
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-10-28
Also published as: WO2023061423A1

Abstract

The invention provides a glass assembly and a window assembly. The glass assembly includes: a light guide including a glass body and having a first surface and a second surface which are oppositely arranged, incident light entering the light guide being capable of being totally reflected between the first surface and the second surface; the light-emitting structure is positioned in the light guide piece or arranged on the first surface or the second surface and guides the incident light out of the second surface; a reflective layer attached to at least a portion of a circumferential edge of the light guide to increase reflection of incident light inside the light guide. The glass assembly provided by the invention can especially reduce the light brightness loss of the peripheral edge of the glass assembly on the premise of not influencing the performance and the aesthetic property of the glass, so that the light-emitting effect is effectively enhanced, and the use experience of a user is improved. Through different configurations of the edges of the glass body and various combinations of different reflecting layers, the glass assembly disclosed by the invention can be applied to various occasions, and meets diversified requirements of users.

Description

Glass component and window body assembly

Technical Field

The invention relates to the technical field of glass, in particular to a glass component integrating a light-emitting function and enhancing a light-emitting effect and a window assembly applying the glass component.

Background

With the rapid development of the automobile industry and the increasing demand of consumers for vehicle functions, glass with a light-emitting function has received great attention from vehicle manufacturers and consumer preference. Generally, a glass having a light emitting function is manufactured by laminating a micro-structured film layer into the glass to form a pattern region, or by micro-engraving or applying a light emitting enamel (enamel) or ink on the surface of the glass based on a pattern design, and after incident light emitted from a light source disposed on the surface or side of the glass or integrated into the glass is totally reflected in the glass, when the incident light is projected to the pattern region, the light is scattered or diffused to pass through the pattern region due to a change in the surface structure, thereby achieving different light emitting effects.

Although light can be propagated in glass in a total reflection manner, when the light is propagated to the edge of the glass, the light is easy to transmit out from the edge of the glass, so that not only can an undesirable peripheral bright strip be generated at the edge of the glass to influence the visual comfort, but also the light emitted by the light source is not fully utilized to cause the loss of light brightness, and a satisfactory light-emitting effect cannot be achieved. Therefore, how to increase the utilization rate of the light source becomes one of the keys for improving the light emitting effect of the luminescent glass.

Disclosure of Invention

The invention aims to provide a glass component with an enhanced light-emitting function, which reduces or completely eliminates the scattering or diffusion of incident light at the edge of glass by combining a reflection design at the edge of the glass, thereby improving the light source utilization rate of the light-emitting glass, improving the product performance and enhancing the user experience.

To this end, according to one aspect of the present invention, there is provided a glass assembly comprising: a light guide comprising a glass body and having a first surface and a second surface arranged oppositely, wherein incident light entering the light guide is totally reflected between the first surface and the second surface; the light-emitting structure is positioned in the light guide part or arranged on the first surface or the second surface and guides the incident light out of the second surface; a reflective layer attached to at least a portion of a circumferential edge of the light guide to increase reflection of the incident light inside the light guide.

By providing the reflecting layer, the glass component prevents the loss of light rays at the edge of the glass, thereby effectively utilizing incident light emitted by the light source, improving the luminous brightness and enhancing the use comfort of users. The application of the reflecting layer is easy to implement, so that the glass assembly has the beneficial effects of simple process, obvious performance improvement and the like.

Embodiments of the present invention may further include any one or more of the following alternatives according to the above technical idea.

In certain alternatives, the reflective layer is continuously or discretely attached to the peripheral edge of the glass body, the reflective layer being at least substantially flush with the first surface and/or the second surface.

In certain alternatives, the reflective layer is continuously or discretely attached to the peripheral edge of the glass body, the reflective layer extending over the first surface and/or the second surface.

In some alternatives, the peripheral edge of the glass body is provided as a flat surface, a curved surface or a flat surface with a chamfer.

In certain alternatives, the peripheral edge of the glass body is substantially at right angles to the first surface and/or the second surface.

In certain alternatives, the glass assembly includes a light source embedded in the glass body.

In certain alternatives, the light source is embedded in an opening provided adjacent a peripheral edge on the glass body, and the reflective layer is attached around the entire peripheral edge of the glass body.

In certain alternative forms, the reflective layer has a reflectivity of at least 80% or greater, preferably 85% or greater, more preferably 90% or greater, more preferably 95% or greater, more preferably 97% or greater, and more preferably 99% or greater.

In some alternatives, the reflective layer is a coating, or a strip or film attached by an adhesive, or a tape with an adhesive layer.

In certain alternatives, the reflective layer is a single layer film or is a stack of multiple layers, wherein the multiple layers are the same or different from each other.

In some alternatives, the material of the reflective layer comprises a combination of one or more of a metal, a metal oxide, a non-metal oxide, an organic polymer.

In certain alternative forms, the metal comprises a combination of one or more of silver, aluminum, copper, gold; the metal oxide comprises titanium dioxide; the non-metal oxide comprises silicon dioxide; the organic polymer comprises one or more of polyester, polyvinyl chloride, polyurethane, thermoplastic elastomer, polypropylene, acrylonitrile-butadiene-styrene copolymer, and polycarbonate.

In certain alternative forms, the reflective layer is a composite structure including at least a first layer, a second layer, and a third layer sandwiched therebetween, wherein the first layer and/or the second layer is selected from an organic polymer, and the third layer is selected from a metal.

In certain alternatives, the glass body is a single sheet of glass or a laminated glass.

According to another aspect of the present invention, there is provided a window assembly comprising a glazing unit as described above, wherein the window assembly comprises a door, a window, a curtain wall, a window glazing, an aircraft glazing or a ship glazing.

In certain alternatives, the window assembly is a vehicle glazing comprising a front windshield, a rear windshield, a sunroof, a door glass, or a quarter glass, wherein the first surface of the light guide faces the vehicle exterior and the second surface faces the vehicle interior.

The glass component integrated with the reflecting layer can particularly reduce the light brightness loss of the peripheral edge of the glass component on the premise of not influencing the performance and the aesthetic property of glass, so that the luminous effect is effectively enhanced, and the use experience of a user is improved. Through different configurations of the edges of the glass body and various combinations of different reflecting layers, the glass assembly disclosed by the invention can be applied to various occasions, and meets diversified requirements of users.

Drawings

Other features and advantages of the present invention will be better understood by the following detailed description of alternative embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic view of a light emitting manner of a glass assembly, in which incident light totally reflected in a light guide is guided out through a light exit structure;

FIG. 2 is a schematic view of a glass assembly according to an embodiment of the present invention, in which incident light totally reflected in a light guide is guided out through a light exit structure after being reflected into the light guide again at an edge of the light guide;

FIGS. 3A-3C are schematic diagrams illustrating, respectively, different forms of reflective layers that fit to different circumferential edges of a light guide, wherein the reflective layers are substantially flush with the surface of the light guide;

fig. 4A to 4C are schematic views respectively showing different forms of reflective layers adapted to different circumferential edges of the light guide, wherein the reflective layers are coated to the surface of the light guide.

Detailed Description

The practice and use of the embodiments are discussed in detail below. It should be understood, however, that the specific embodiments discussed are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the invention. The directional expressions of the structural positions of the respective components such as upper, lower, top, bottom, etc. in the description are not absolute, but relative. When the respective components are arranged as shown in the drawings, these direction expressions are appropriate, but when the positions of the respective components in the drawings are changed, these direction expressions are changed accordingly.

Herein, the expressions "comprising", "including", and "having", and the like, which are synonymous, are open-ended and do not exclude additional, unrecited elements, steps or components. The expression "consisting of 8230excluding any element, step or component not specified. The expression "consisting essentially of 8230comprises" means that the scope is limited to the specified elements, steps or components, plus optional elements, steps or components which do not materially affect the basic and novel characteristics of the claimed subject matter. It is understood that the expression "comprising" covers the expressions "consisting essentially of and" consisting of \82303030303030A ".

As used herein, the terms "first," "second," and the like, do not denote any order or importance, but rather are used to distinguish one element from another.

As used herein, the meaning of "plurality" or "layers" refers to two or more, unless specifically limited otherwise.

As used herein, unless specifically limited otherwise, "mounted," "connected," "attached," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms herein can be understood as the case may be, to one skilled in the art.

As used herein, "glass" is an amorphous inorganic non-metallic material generally made from a variety of inorganic minerals (e.g., quartz sand, borax, boric acid, barite, barium carbonate, limestone, feldspar, soda ash, etc.) as the main raw materials, with the addition of a small amount of auxiliary raw materials. Its main components are silicon dioxide and other oxides. In the various embodiments described, the glass of the present invention may be curved glass, although it is shown as flat glass in the figures. In addition, in various embodiments, the light guide in the glass assembly is described as a separate glass body or glass plate, however, in some cases, the surface of the glass body may also be coated with a special coating or gel, which may be used for improving thermal insulation and/or comfort and/or providing other functional effects, which may have a refractive index similar to that of the glass body to integrally form the light guide, and which may also be laminated glass to achieve multiple functions or effects.

Hereinafter, the glass assembly will be described as applied to a window glass, although it is not excluded that the glass assembly may be applied to a door, a window, a curtain wall, an aircraft glass, or a ship glass, etc. When the glass assembly is described for use in a vehicle window glass, "outer" and "inner" are directions relative to the vehicle body, "outer" refers to a direction away from the vehicle body, and "inner" refers to a direction facing the vehicle body. It is understood that the vehicle window glass according to the embodiment of the present invention, including but not limited to a front windshield glass, a rear windshield glass, a sunroof glass, a door glass, or a quarter glass, may provide different luminous effects based on different needs.

In the increasingly diverse automotive industry, glass assemblies having luminous effects (e.g., lighting effects, decorative effects, etc.) have been widely used in, for example, vehicle skylights of medium and high-grade vehicles, and not only can the effects of light brightness and/or color change be realized, but also illumination effects having different patterns can be formed in combination with coatings and/or sandwich structures.

Fig. 1 shows a glass component in a luminous manner. The glass component 10 comprises a glass body 11 having a first surface 14 and a second surface 15, a light exit structure 12 arranged on the second surface 15 of the glass body 11, and a light source 13. The light source 13 is, for example, a point-like or line-like light source integrated inside the glass body 11, or a light source attached to a side surface of the glass body in a neighboring, fitting, or the like manner, such as an LED light emitting strip. The light exit structure 12 may be any structure that changes the propagation angle of light in the glass body 11 and guides the light out, for example, it may be a particle structure or a layer structure disposed in the glass body, or light scattering particles disposed on the second surface 15 by mechanical structuring, stamping, etching or spraying, etc., so that the incident light emitted from the light source 13 and entering the glass body 11 is transmitted in the first surface 14 and the second surface 15 and is totally reflected and then exits from the light exit structure 12 on the second surface 15, as shown by the arrows in the figure. The light exit structure 12 may also be a printed layer of enamel or ink based on a pattern design and may be arranged discontinuously on the second surface 15 to create different display patterns or display effects. When applied to a window pane of a vehicle, the first surface 14 faces the vehicle exterior and the second surface 15 faces the vehicle interior, so that occupants in the vehicle can experience a variety of lighting effects from the window pane. Because the light is totally reflected in the glass body 11, as shown in fig. 1, the light is scattered out of the glass body after being reflected to the edge of the glass body 11, which not only results in the loss of light brightness required by the light emitting effect, but also causes the undesirable bright stripes to appear on the edge of the glass body, thereby affecting the visual comfort.

According to the concepts of the present invention, a reflective layer is integrated on the glass subassembly to re-reflect light that is totally reflected to the edge of the light guide back into the light guide to reduce or substantially completely prevent the diffusion or scattering of light from the edge of the light guide.

Specifically, as shown in one embodiment in fig. 2, the glass assembly 100 includes a glass body 110 having a first surface 140 and a second surface 150, a light exit structure 120 disposed on the second surface 150 of the glass body 110, and a light source 130. It is to be understood that commercially available coatings, coatings or films having equivalent functions or effects may be used as the light extraction structures described above. In addition, the number of layers, the size and the distribution of the light exit structure may be determined according to the needs, and are not limited to those shown in the drawings.

According to the present invention, a reflective layer 170 is attached to at least a portion of the peripheral edge 160 of the glass body 110 to increase the reflection of incident light emitted by the light source 130 inside the glass body 110. Ideally, after the light is reflected by the reflecting layer at the circumferential edge of the glass body, the incident angle of the light with respect to the first surface and/or the second surface is not changed significantly, that is, the angle of total reflection propagation in the glass body can be maintained. Thus, the peripheral edge of the glass body needs to fit well with the reflective layer to minimize light diffusion at the peripheral edge. Further, the reflective layer is at least substantially flush with the surface of the glass body to substantially completely block light from being transmitted out of the glass body, e.g., in certain embodiments, the reflective layer 170 is continuously or discretely attached to the peripheral edge 160 of the glass body 110 and is at least substantially flush with the first and

second surfaces

140, 150, as shown in fig. 2. In some embodiments, the reflective layer 170 is continuously or dispersedly attached to the peripheral edge 160 of the glass body 110 and extends over the first surface 140 and/or the second surface 150, thereby effectively reflecting light incident on the peripheral edge 160 back to the glass body 110 entirely.

As for the light source 130, the arrangement is not limited to that shown in fig. 2, and the light source may be arranged adjacent to, attached to, or the like, the side surface of the glass body 110 as in the conventional design, in which case the reflective layer 170 is dispersedly attached to the circumferential edge of the glass body 110 where the light source is not arranged. In some embodiments, the light source may be a point or line light source integrated within the glass body, such as where the glass body is a laminated glass, such that the reflective layer can be attached around the entire circumferential edge of the glass body, thereby increasing the reflectivity and thus improving the luminous effect. In some embodiments, the light source is preferably embedded in one or more openings in the glass body 110 disposed adjacent to the peripheral edge 160. Alternatively, the openings may be formed by means of, for example, drilling. In this way, the reflective layer can not only be attached around the entire circumferential edge of the glass body, but also enable improved luminous effects to be obtained with single glass or laminated glass at low cost and with a simplified structure. In case the glass body is of polygonal configuration, for example quadrangular, the openings are advantageously arranged at corner positions.

As can be seen from fig. 2, by providing the reflective layer 170, incident light emitted from the light source 130 is reflected back to the glass body 110 via the reflective layer 170 for multiple reflections again after propagating in the glass body 110 to the circumferential edge 160 by total emission, e.g. in the direction of the solid arrows, and is guided out of the glass body 110 through the light exit structure 120, as indicated by the dashed arrows. Due to multiple reflections of the light in the glass body, the light can repeatedly pass through the light emitting structure, so that the utilization rate of a light source is improved, and the brightness of the luminescent glass is increased.

Fig. 3A to 4C respectively show the structural forms of different combinations of the circumferential edge of the glass body and the attached reflective layer in glass assemblies according to different embodiments of the present invention. It should be understood that the different structural forms of the peripheral edge of the glass body are key factors of the light reflectivity inside the glass body, which can be increased by the reflective layer, and the reflectivity of the reflective layer arranged at the peripheral edge of the glass body can be improved to at least more than 80%, preferably more than 85%, more preferably more than 90%, more preferably more than 95%, more preferably more than 97%, and more preferably more than 99% by the reasonable design of the structural form of the peripheral edge of the glass body and the selection of the material of the reflective layer.

Advantageously, the peripheral edge of the glass body is substantially at right angles to the first surface and/or the second surface. In the embodiment shown in fig. 3A, the peripheral edge 160a of the glass body 110a is substantially at right angles to the first and second surfaces and is disposed as a flat surface, and the reflective layer 170a is substantially flush with the first and second surfaces. In this way, the possibility of scattering or diffusing light at the circumferential edge can be minimized, the reflectivity of the reflective layer can reach more than 95%, the light can still propagate in the glass body 110a through total reflection after being reflected by the reflective layer 170a, and the light can be completely guided out almost without loss when passing through the light exit structure, so that the optimal light emitting effect is obtained. It should be understood that in some embodiments, the reflective layer may also be substantially flush with only the first or second surface, provided that the desired reflectivity is met.

Alternatively, the peripheral edge of the glass body may be provided as a curved surface or a flat surface with a chamfer. Fig. 3B shows an embodiment in which the peripheral edge 160B of the glass body 110B is provided as a curved surface, and accordingly, the reflective layer 170B is also provided as a curved surface that mates with the peripheral edge 160B. Fig. 3C shows an embodiment in which the peripheral edge 160C of the glass body 110C is provided as a flat surface with a chamfer (e.g., a rounded chamfer), and accordingly, the reflective layer 170C is also provided as a flat surface with a chamfer in cooperation with the peripheral edge 160C. In contrast, the reflectivity of the reflective layer 170c is lower than that of the reflective layer 170a in fig. 3A, but is greater than that of the reflective layer 170B in fig. 3B.

In certain embodiments, the reflective layer can be continuously or discretely attached to the peripheral edge of the glass body and extend over the first surface and/or the second surface. In the embodiment shown in fig. 4A, the difference from the embodiment shown in fig. 3A is that the reflective layer 170d not only covers the peripheral edge 160a of the glass body 110a, but also extends to cover the first surface and the second surface of the glass body 110 a. The embodiment shown in fig. 4B is similar to that shown in fig. 3B, except that the reflective layer 170e covers the peripheral edge 160B of the glass body 110B and extends over the first and second surfaces of the glass body 110B. Likewise, the embodiment shown in fig. 4C is similar to that of fig. 3C, except that the reflective layer 170f wraps around the peripheral edge 160C of the glass body 110C and extends over the first and second surfaces of the glass body 110C. In the embodiments shown in fig. 4A to 4C, the area range of the first surface and the second surface of the glass body covered by the reflective layer can be determined according to actual needs and process selection, as long as the reflectivity of the reflective layer is controlled within a preferred range, and the reflective layer can also cover only one surface and be substantially flush with the other surface.

In the embodiments described above with reference to the drawings, the glass component of the present invention integrates the reflective layer in different ways, so as to effectively improve the utilization rate of the light source and increase the luminance, and has the advantages of simple process, significant performance improvement, etc., wherein the reflective layer can be obtained from commercially available products through commercial routes, and the thickness and other dimensions of the reflective layer are not limited. Advantageously, the reflective layer may be a coating, or a strip or film layer attached by an adhesive, or a tape with an adhesive layer. In certain embodiments, the reflective layer may be a single layer film or a stack of multiple layers, wherein the multiple layers may be the same or different from each other.

In possible embodiments, which may or may not be described, the glass body may be selected as a single sheet of glass or as a laminated glass. For example, when applied to a windshield or a roof window in a vehicle window, a laminated glass may be used, which includes at least two glass bodies and an interlayer such as polyvinyl butyral (PVB), or Ethylene Vinyl Acetate (EVA) bonding the two into a single body. It is understood that laminated glass has been widely used in the automotive field, and that in laminated glass, a variety of functional layers are generally provided to achieve different functions, such as a dimming layer (e.g., PDLC, polymer dispersed liquid crystal; or EC, electrochromic), a light-emitting layer, an imaging layer, a touch layer, and the like, and the application of a reflective layer to the peripheral edge of the laminated glass in the present invention does not affect the function of these functional layers. For the front and rear door glasses or the rear windshield glass among the window glasses, a single piece of tempered glass may be used. Alternatively, the reflective layer may be attached to the circumferential edge of the light guide by spraying, coating, or pasting after the light guide in the form of a single-layer glass body, a coated glass body, or a laminated glass is high-pressure molded. Wherein, the material of the reflecting layer comprises one or more of metal, metal oxide, non-metal oxide, organic polymer and the like.

Depending on different needs, the metal optionally includes a combination of one or more of silver (Ag), aluminum (Al), copper (Cu), gold (Au), and the like; the metal oxide comprises titanium dioxide (TiO) ₂ ) Etc.; the non-metal oxide comprises silicon dioxide (SiO) ₂ ) Etc.; the organic polymer comprises Polyester (PET)) Polyvinyl chloride (PVC), polyurethane (PU), thermoplastic elastomer (TPE), polypropylene (PP), acrylonitrile Butadiene Styrene (ABS), polycarbonate (PC), and the like.

By way of example, the reflective layer is provided to include, but is not limited to: a metal coating or a metal tape having an adhesive layer; a white or other organic polymer coating or film layer having a highly reflective color; a composite structure comprising at least a first layer (e.g. an oxidation resistant layer/protective layer), a second layer (e.g. a base layer) and a third layer sandwiched therebetween, wherein the first and/or second layer is selected from organic polymers and the third layer is selected from metals; a coating comprising a metal and a metal oxide; including mixtures of metal or metal oxides with organic polymers, e.g., titanium dioxide/aluminum/silver + polyester/polycarbonate, or mixtures of metal oxides with non-metal oxides and organic polymers, e.g., titanium dioxide + silicon dioxide + polyester/polycarbonate.

The test shows that the brightness of the luminescent glass without a reflective layer after the light source is turned on is 6.211 candelas per square meter (cd/m) ² ) The brightness of 8.033 candelas per square meter (cd/m) was measured again by covering the peripheral edge of the luminescent glass with an aluminum foil tape ² ) And the brightness is improved by nearly 30%. Therefore, the glass component can increase the luminous brightness of the luminous glass under the condition of not changing the existing light source module, and improve the light utilization rate of the light source module so as to meet the requirements of manufacturers and users. The invention enables in particular a satisfactory luminous brightness to be obtained when a design is used in which the light source is integrated in an opening of the glass body adjacent to the circumferential edge.

It is to be understood herein that the embodiments shown in the figures are merely illustrative of alternative configurations, shapes, sizes and arrangements of various alternative components of glass assemblies according to the present invention, which are intended to be illustrative and not limiting, and that other shapes, sizes and arrangements may be employed without departing from the spirit and scope of the present invention.

While the technical content and the technical features of the invention have been disclosed, it is understood that various changes and modifications of the disclosed concept can be made by those skilled in the art within the spirit of the invention, and the invention is not limited thereto. The above description of embodiments is intended to be illustrative, and not restrictive, and the scope of the invention is defined by the appended claims.

Claims

1. A glass assembly, comprising:

a light guide comprising a glass body and having a first surface and a second surface arranged oppositely, wherein incident light entering the light guide is totally reflected between the first surface and the second surface;

the light-emitting structure is positioned in the light guide piece or arranged on the first surface or the second surface and guides the incident light out of the second surface;

a reflective layer attached to at least a portion of a circumferential edge of the light guide to increase reflection of the incident light inside the light guide.

2. The glass assembly of claim 1, wherein the reflective layer is continuously or discretely attached to a peripheral edge of the glass body, the reflective layer being at least substantially flush with the first surface and/or the second surface.

3. The glass assembly of claim 1, wherein the reflective layer is continuously or discretely attached to a peripheral edge of the glass body, the reflective layer extending over the first surface and/or the second surface.

4. Glass assembly according to any one of claims 1 to 3, characterized in that the peripheral edge of the glass body is provided as a plane, an arc or a plane with a chamfer.

5. The glass assembly of claim 4, wherein a peripheral edge of the glass body is substantially at a right angle to the first surface and/or the second surface.

6. The glass assembly according to any one of claims 1 to 3, comprising a light source embedded in the glass body.

7. The glass assembly of claim 6, wherein the light source is embedded in an opening disposed on the glass body adjacent to the peripheral edge, the reflective layer being attached around the entire peripheral edge of the glass body.

8. The glass assembly according to any of claims 1 to 3, wherein the reflective layer has a reflectivity of at least 80% or more, preferably 85% or more, more preferably 90% or more, more preferably 95% or more, more preferably 97% or more, more preferably 99% or more.

9. The glass assembly of claim 8, wherein the reflective layer is a coating, or a strip or film layer attached by an adhesive, or a tape with an adhesive layer.

10. The glass assembly according to claim 8, wherein the reflective layer is a single layer film or is a stack of multiple layers, wherein the multiple layers are the same or different from each other.

11. The glass assembly of claim 8, wherein the material of the reflective layer comprises a combination of one or more of a metal, a metal oxide, a non-metal oxide, an organic polymer.

12. Glass assembly according to claim 11,

the metal comprises one or more of silver, aluminum, copper and gold;

the metal oxide comprises titanium dioxide;

the non-metal oxide comprises silicon dioxide;

the organic polymer comprises one or more of polyester, polyvinyl chloride, polyurethane, thermoplastic elastomer, polypropylene, acrylonitrile-butadiene-styrene copolymer, and polycarbonate.

13. The glass assembly of claim 8, wherein the reflective layer is a composite structure comprising at least a first layer, a second layer, and a third layer sandwiched therebetween, wherein the first layer and/or the second layer is selected from an organic polymer, and the third layer is selected from a metal.

14. A glass assembly according to any of claims 1 to 3, wherein the glass body is a monolithic glass or a laminated glass.

15. A window assembly comprising a glazing assembly according to any of claims 1 to 14, wherein the window assembly comprises a door, a window, a curtain wall, a window glazing, an aircraft glazing or a ship glazing.

16. The window assembly of claim 15 wherein said window assembly is a vehicle window pane comprising a front windshield, a rear windshield, a sunroof, a door pane, or a quarter pane, wherein said first surface of said light guide is oriented toward the exterior of the vehicle and said second surface is oriented toward the interior of the vehicle.